Vibrational Relaxation via Long-Lived Complexes and in Symmetric Exchange Reactions

4 Vibrational Relaxation via Long-Lived Complexes and in Symmetric Exchange Reactions 

The above mechanisms of vibrational relaxation refer to an intermolecular interaction of either a repulsive or a weakly attractive nature. 

An example of such a relaxation studied both theoretically and experimentally is the highly effective process [390] 

Note also that the statistical approximation for VT energy transfer is often used to describe the relaxation of highly excited polyatomic molecules, even when there 

Another possible effective mechanism of vibrational activation and deactivation is the relaxation in symmetric exchange reactions. If in the system A + BC, the A and C (or A, B and C) atoms are identical, vibrational deactivation can, in general, proceed by two paths 

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